CN114491310A - Geographic information analysis method and system supporting multiple data sources - Google Patents
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Abstract
The invention discloses a geographic information analysis method and a geographic information analysis system supporting multiple data sources, wherein the method comprises the following steps: receiving an ogc service request by a Geoserver, storing meta-information of the ogc request, and previewing the ogc service by using the meta-information; acquiring space-time geographic information data required by the service from a data source according to the ogc service request; and carrying out information analysis according to the time-space geographic information data. The method and the system provided by the invention can support more common data sources in the market, and can support the release of vector data and the remote release of raster data.
Description
Technical Field
The invention belongs to the field of geographic information analysis, and particularly belongs to a geographic information analysis method and system supporting multiple data sources.
Background
The geographic information analysis system is a computer technology system which is used for providing various spatial and dynamic geographic information in a timely manner by adopting a geographic model analysis method on the basis of geographic spatial data, collecting, storing, analyzing and visually expressing various geographic spatial information and providing services for geographic research and geographic decision making.
The main function of the geographic information analysis system is to read different types of data from various data sources (local and remote), and then release the data to the layer formation service for visual display. The geographic information analysis system on the market at present mainly takes geoverer as a main part, but the geoverer has great defects: firstly, the data sources supported by the geoserver are few, and secondly, the data can only be read from the local when the raster data is issued by the system; when vector data are issued, only a few data sources such as cassandra/greenplus are supported, and the user-defined data sources are not supported.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The invention aims to provide a geographic information analysis method supporting multiple data sources, which is based on the conventional Geoserver software, overcomes the inherent defect of the conventional software that the data sources are too few and only can support a plurality of extremely limited data sources, and with the help of the method provided by the invention, the Geoserver can support more common databases in the market as the data sources, and the method realizes the release of vector data and the remote release of raster data, which are not available in the prior art.
The second objective of the present invention is to provide a geographic information analysis system supporting multiple data sources, which is a system supporting the above method, and the system can be used to analyze the information of the spatio-temporal geographic data from multiple data sources conveniently and quickly.
In order to achieve the above purpose of the present invention, the following technical solutions are adopted:
the geographic information analysis method supporting multiple data sources comprises the following steps:
receiving an ogc service request by a Geoserver, storing meta-information of the ogc request, and previewing the ogc service by using the meta-information;
acquiring space-time geographic information data required by the service from a data source according to the ogc service request;
and carrying out information analysis according to the time-space geographic information data.
Preferably, the meta information includes: service type, data type, and data information.
The service types include: web map services wms, slice map Web services wmts, Web element services wfs, mvts, etc. The network map service wms is a service standard which is used by a background map server to provide GIS data and geographic information pictures through the Internet; the slice map Web service wmts is directed to a service providing customizable maps, which is a dynamic data or user-customized map method that provides static data (base maps) to enhance scalability; the network element service wfs can support a user to insert, update, delete, retrieve and discover the service for the geographic elements through HTTP in a distributed environment, the service can return corresponding element-level data according to HTTP client requests, provides transaction operations such as addition and deletion of the data and the like, and is further deep for Web map services.
The data types comprise vector data, slice data, raster data and the like, and the method has different data processing modes according to different data types.
The data information includes data such as a data set name of the data.
In the method, in order to ensure that the client and the geoserver can be better adapted, a resource acquisition interface of the geoserver is modified to adopt an open source interface of the ogc specification of geotools, so that the geoserver can be perfectly adapted with the client.
Preferably, the acquiring of the spatiotemporal geographic information data required for the service comprises the steps of:
the Geoserver accesses a server through a client;
the server side responds to a request from a client side and acquires the spatiotemporal geographic information data from the data source according to the request;
and the server side returns the spatio-temporal geographic information data to a client side, and the client side returns the spatio-temporal geographic information data to the Geoserver.
Preferably, the spatio-temporal geographic information data includes vector data, slice data, raster data, and the like, and if the spatio-temporal geographic information data is vector data, rendering of a layer is directly performed according to the vector data after the spatio-temporal geographic information data is acquired; and if the space-time geographic information data is raster data, after the space-time geographic information data is obtained, rendering layers after data backup is locally performed. The rendering effect of the layer is to make the layer more clear and vivid by means of splicing, adding effects and the like, so as to facilitate the subsequent data processing.
Preferably, in order to solve the problem of too few data sources supported by the conventional technology, the server side is configured with various adapters such as mysql adapter, redis adapter, greenplus adapter and minio adapter, and in this way, the server side can support commercially available databases such as mysql, redis, greenplus and minio as data sources.
Preferably, the method further comprises the following steps after acquiring the spatio-temporal geographic information data required by the service from the data source: and performing model integration on the spatio-temporal geographic information data to ensure that a uniform data structure is returned. Because the method can support a plurality of data sources for information analysis, a problem that data information is too disordered and the data structure is not unified due to too many data sources is newly generated, and after the data information is processed by the method, the disordered and irregular data can be converted into a unified data structure, so that the data management and the subsequent operation are facilitated.
The invention also discloses a geographic information analysis system supporting multiple data sources, which comprises:
a data receiving module: receiving an ogc service request, storing meta-information of the ogc request, and previewing the ogc service by using the meta-information;
a data acquisition module: acquiring space-time geographic information data required by the service from a data source according to the ogc service request;
a data analysis module: and carrying out information analysis according to the time-space geographic information data.
Preferably, the data obtaining module is a connector module, and the connector module includes a client and a server, where the client and the server are the client and the server described above.
Preferably, the data acquisition module is further provided with a cache module, the cache module is mainly set for some data used at high frequency, such as vector data, and the overall access efficiency can be improved by using the cache module.
Also disclosed is a computer-readable storage medium having a computer program stored thereon which, when executed, performs the steps of the above-described method.
A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the steps of the above method are implemented when the processor executes the program.
Compared with the prior art, the invention has the beneficial effects that:
(1) the method supports connection of various data sources, is compatible with connection protocols and grammars of the data sources, optimizes read-write operation of each data source, and can efficiently inquire data from the data sources or read data from the data sources.
(2) And the publishing of vector data and the remote publishing of raster data are supported.
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Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic flow chart of a geographic information method according to an embodiment of the present invention;
FIG. 2 is a schematic view of a process for acquiring spatiotemporal geographic information data according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a computer device according to an embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings and the detailed description, but those skilled in the art will understand that the following described embodiments are some, not all, of the embodiments of the present invention, and are only used for illustrating the present invention, and should not be construed as limiting the scope of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to more clearly illustrate the technical solution of the present invention, the following description is made in the form of specific embodiments.
Examples
Referring to fig. 1-2, the present embodiment provides a geographic information analysis method and system supporting multiple data sources, the method includes the following steps:
step S1-1, Geoserver receives the ogc service request, stores the meta-information of the ogc request, and previews the ogc service by using the meta-information;
step S1-2, acquiring spatio-temporal geographic information data required by the service from a data source according to the ogc service request;
and step S1-3, performing information analysis according to the spatio-temporal geographic information data.
Preferably, the meta information includes: service type, data type, and data information.
Preferably, the acquiring of the spatiotemporal geographic information data required for the service comprises the steps of:
step S2-1 is that the Geoserver accesses the server through the client;
step S2-2 is that the server side responds to a request from a client side and obtains the spatio-temporal geographic information data from the data source according to the request;
step S2-3 is that the server returns the spatio-temporal geographic information data to the client, and the client returns the spatio-temporal geographic information data to the Geoserver.
Preferably, the spatio-temporal geographic information data are vector data, and then rendering of the layer is directly performed according to the vector data after the spatio-temporal geographic information data are acquired; and if the space-time geographic information data is raster data, after the space-time geographic information data is acquired, rendering the image layer after data backup is locally performed.
Preferably, the server side is compatible with mysql, redis, greenplus and minio data sources by configuring mysql adapter, redis adapter, greenplus adapter and minio adapter.
Preferably, the method further comprises the following steps after acquiring the spatio-temporal geographic information data required by the service from the data source: and performing model integration on the spatio-temporal geographic information data to ensure that a uniform data structure is returned.
Preferably, this embodiment further provides a geographic information analysis system supporting multiple data sources, where the system includes:
a data receiving module: receiving an ogc service request, storing meta-information of the ogc request, and previewing the ogc service by using the meta-information;
a data acquisition module: acquiring space-time geographic information data required by the service from a data source according to the ogc service request;
a data analysis module: and performing information analysis according to the space-time geographic information data.
Preferably, the data acquisition module is a connector module, and the connector module includes a client and a server; the data acquisition module is provided with a cache module to improve the access efficiency.
Fig. 3 is a schematic structural diagram of a computer device disclosed by the invention. Referring to fig. 3, the computer apparatus includes: an input device 63, an output device 64, a memory 62 and a processor 61; the memory 62 for storing one or more programs; when executed by the one or more processors 61, cause the one or more processors 61 to implement a method of radiation normalization as provided in the embodiments above; wherein the input device 63, the output device 64, the memory 62 and the processor 61 may be connected by a bus or other means, as exemplified by the bus connection in fig. 3.
The memory 62 is a computer readable and writable storage medium, and can be used for storing software programs, computer executable programs, and program instructions corresponding to a radiation normalization method according to an embodiment of the present application; the memory 62 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to use of the device, and the like; further, the memory 62 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device; in some examples, the memory 62 may further include memory located remotely from the processor 61, which may be connected to the device over a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input device 63 is operable to receive input numeric or character information and to generate key signal inputs relating to user settings and function control of the apparatus; the output device 64 may include a display device such as a display screen.
The processor 61 executes various functional applications of the device and data processing by executing software programs, instructions, and modules stored in the memory 62.
The computer device provided above can be used to execute the radiation normalization method provided in the above embodiments, and has corresponding functions and advantages.
Embodiments of the present application also provide a storage medium containing computer-executable instructions, which when executed by a computer processor, are configured to perform a method of radiation normalization as provided in the above embodiments, the storage medium being any of various types of memory devices or storage devices, the storage medium including: mounting media such as CD-ROM, floppy disk, or tape devices; computer system memory or random access memory such as DRAM, DDR RAM, SRAM, EDO RAM, Lanbas (Rambus) RAM, etc.; non-volatile memory such as flash memory, magnetic media (e.g., hard disk or optical storage); registers or other similar types of memory elements, etc.; the storage medium may also include other types of memory or combinations thereof; in addition, the storage medium may be located in a first computer system in which the program is executed, or may be located in a different second computer system connected to the first computer system through a network (such as the internet); the second computer system may provide program instructions to the first computer for execution. A storage medium includes two or more storage media that may reside in different locations, such as in different computer systems connected by a network. The storage medium may store program instructions (e.g., embodied as a computer program) that are executable by one or more processors.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A geographic information analysis method supporting multiple data sources is characterized by comprising the following steps:
receiving an ogc service request by a Geoserver, storing meta-information of the ogc request, and previewing the ogc service by using the meta-information;
acquiring space-time geographic information data required by the service from a data source according to the ogc service request;
and carrying out information analysis according to the time-space geographic information data.
2. The method of claim 1, wherein the meta information comprises: service type, data type, and data information.
3. The method of claim 1, wherein obtaining spatiotemporal geographic information data required for a service comprises the steps of:
the Geoserver accesses a server through a client;
the server side responds to a request from a client side and acquires the spatiotemporal geographic information data from the data source according to the request;
and the server side returns the spatio-temporal geographic information data to a client side, and the client side returns the spatio-temporal geographic information data to the Geoserver.
4. The method according to claim 3, wherein the spatio-temporal geographic information data are vector data, and then rendering of the image layer is directly performed according to the vector data after the spatio-temporal geographic information data are acquired; and if the space-time geographic information data is raster data, after the space-time geographic information data is acquired, rendering the image layer after data backup is locally performed.
5. The method according to claim 3, wherein the server side is compatible with mysql, redis, greenplus and minio data sources by configuring mysql adapter, redis adapter, greenplus adapter and minio adapter.
6. The method of claim 1, further comprising the following steps after obtaining the spatio-temporal geographic information data required by the service from the data source: and performing model integration on the spatio-temporal geographic information data to ensure that a uniform data structure is returned.
7. A geographic information analysis system supporting multiple data sources, comprising any of the above claims 1-6, comprising:
a data receiving module: receiving an ogc service request, storing meta-information of the ogc request, and previewing the ogc service by using the meta-information;
a data acquisition module: acquiring space-time geographic information data required by the service from a data source according to the ogc service request;
a data analysis module: and carrying out information analysis according to the time-space geographic information data.
8. The system of claim 7, wherein the data acquisition module is a connector module, and the connector module comprises a client and a server; the data acquisition module is provided with a cache module to improve the access efficiency.
9. A computer-readable storage medium, on which a computer program is stored, characterized in that the program, when executed, carries out the steps of the method of any one of claims 1 to 6.
10. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the steps of the method according to any of claims 1-6 are implemented when the program is executed by the processor.
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